THE MICROSCOPE 



SEPTEMBER 1893. 



Number 9. New Series. 



OBJECTS SEEN UNDER THE MICROSCOPE. 



1. — The Brine Shrimp, 

 [photo-micrograph]. 



The brine shrimp occurs in great numbers in the Great Salt 

 Lake, which has usually been regarded as devoid of life. Di>. J. 

 F. Talmage has kindly sent the accompanying illustration. 



The mounting of this shrimp, Artemiafertills, nicely, is by no 

 means a simple undertaking, most of the ordinary media caus- 

 ing the delicate structure to become distorted, or producing such 

 a transparency as to render the whole object invisible. The 

 best method is to mount them in a preparation of lake water 

 with corrosive sublimate and an alcoholic solution of carbolic 

 acid. Into this fluid the living artemiae are transferred directly 

 from the lake brine; they die quickly, but in so doing spread 

 themselves out most perfectly. By this method it is not always 

 possible to get the mount free from foreign particles, but this is 



